Results 1 to 10 of about 289 (181)
The Phanerozoic climate. [PDF]
Ann N Y Acad Sci, 2023 We review the long‐term climate variations during the last 540 million years (Phanerozoic Eon). We first summarize the geological and geochemical datasets available for reconstruction of long‐term climate variations. We then explore the main drivers of climate that appear to explain a large fraction of these climatic oscillations. The first is the long‐
Shaviv NJ, Svensmark H, Veizer J.
europepmc +2 more sources
Living Reviews in Solar Physics, 2005 We review the current status of local helioseismology, covering both theoretical and observational results. After a brief introduction to solar oscillations and wave propagation through inhomogeneous media, we describe the main techniques of local ...
Gizon Laurent, Birch Aaron C.
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Forecasting Continuum Intensity for Solar Active Region Emergence Prediction Using Transformers
Journal of Geophysical Research: Machine Learning and ComputationEarly and accurate prediction of solar active region (AR) emergence is crucial for space weather forecasting. Building on established Long Short‐Term Memory (LSTM) based approaches for forecasting the continuum intensity decrease associated with AR ...
Jonas Tirona +7 more
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Space WeatherA demonstrated failure mode for operational solar flare forecasting is the inability to forecast flares that occur near, or just beyond, the solar limb.
K. D. Leka +5 more
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The future of Genesis science. [PDF]
Meteorit Planet Sci, 2019 Abstract Solar abundances are important to planetary science since the prevalent model assumes that the composition of the solar photosphere is that of the solar nebula from which planetary materials formed. Thus, solar abundances are a baseline for planetary science.
Burnett DS, Jurewicz AJG, Woolum DS.
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Seismology of active regions: Current status and perspectives
Frontiers in Astronomy and Space Sciences, 2023 The goal of helioseismology is to provide accurate information about the Sun’s interior from the observations of the wave field at its surface. In the last three decades, both global and local helioseismology studies have made significant advances and ...
Sushanta Tripathy
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Sub-surface plasma flows and the flare productivity of solar active regions
Frontiers in Astronomy and Space Sciences, 2022 The extreme space weather conditions resulting from high energetic events likes solar flares and Coronal Mass Ejections demand for reliable space weather forecasting.
B. Lekshmi +5 more
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Radial gradient of the solar rotation rate in the near-surface shear layer of the Sun
Frontiers in Astronomy and Space Sciences, 2022 We study the radial gradient of the solar rotation rate in the near-surface shear layer (NSSL) from about .950 R⊙ to the solar surface and its variation during Solar Cycles 23 and 24 with ring-diagram analysis applied to Global Oscillation Network Group (
Rudolf Komm
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Gravitational helioseismology? [PDF]
Physical Review D, 1996 The magnitudes of the external gravitational perturbations associated with the normal modes of the Sun are evaluated to determine whether these solar oscillations could be observed with the proposed Laser Interferometer Space Antenna (LISA), a network of satellites designed to detect gravitational radiation.
Cutler, Curt, Lindblom, Lee
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Equatorially trapped Rossby waves in radiative stars
Astronomische Nachrichten, Volume 344, Issue 10, December 2023., 2023 Abstract Observations by recent space missions reported the detection of Rossby waves (r‐modes) in light curves of many stars (mostly A, B, and F spectral types) with outer radiative envelope. This article aims to study the theoretical dynamics of Rossby‐type waves in such stars. Hydrodynamic equations in a rotating frame were split into horizontal and
Mariam Albekioni +4 more
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